A tetrad field with two unknown functions of the radial coordinate and an angle Φ (the polar angle ϕ times a function of the radial coordinate), is applied to the field equation of the modified theory of gravity. An exact vacuum solution is derived; its scalar torsion, , is constant. When the angle Φ coincides with the polar angle ϕ, the derived solution will be a solution only for the linear form of the f(T) gravitational theory.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.